要做的事, x+ {( w# a; c: L1 d# a1 j1 u5 y3 R+ q
通过STM32自带的12位ADC模块读取8通道电压信号,并将其通过USART1发送出来( ?3 f Q0 h* v; c! X% x
# g1 P# T2 j$ O* d7 ASTM32Cube的USART1配置+ D8 O( O* p# Y: q( Y
USART1总体配置
$ _7 x8 @( Z* ~9 P/ u: {% yUSART1的配置如下图所示+ L4 `: Q7 |6 \; c4 \- q
波特率初始化为115200,后续可以再进行修改
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9 `) W. B* | G* X. A |& E* Y/ `; K! H m8 b9 U0 t
0 ^8 T% ?0 ^$ R$ V3 N9 J1 {8 h4 OUSART1引脚配置1 U9 C7 a/ Y0 f, x0 a: Q
USART1的引脚配置如下
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PA10为USART1的RX1 E6 T+ G4 H6 h# y2 r5 F1 N" O
5 u1 y' l2 L5 T. C% G& ]
PB6为USART1的TX
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- G4 T# p4 m. f; Y6 Kfputc重定向
: i# R% `$ X: u6 b重定向完成后,在.c文件的开头或对应的.h文件中include <stdio.h>即可使用printf函数: y" i9 ~4 ]8 x4 ~5 Q5 F; r% d I; |: m$ e
6 O6 P( z3 S% j- H1 L
. J! p ]. B( r8 U+ _
- w8 b* C. k! \( J( g8 t0 r' E* J0 tUSART1接收
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; X" Y/ c9 {: L
重写中断服务函数HAL_UART_RxCpltCallback" z. ]- C/ W9 C6 M, @5 x( l
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自定义一个Clear函数
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3 m8 X, U5 X" L7 L' g9 y3 b! T 我们需要在几个地方extern一下,一个是usart.h一个是main.c
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这里附上相关代码
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首先是usart.h, B& D# i2 h. y( _& i, _& c* L
# o: B1 [& P6 l3 u5 e8 u8 w7 [0 o. U
- /* USER CODE BEGIN Header */
/ j, J& Z( G7 h7 W. X+ ~ - /**! _; k( [8 M# @: ?* ~" S( L
- ******************************************************************************
$ B8 M! U/ Q" T2 j# F, p - * @file usart.h0 E+ x2 H4 t3 S& v" }2 I/ O' x' s7 c
- * @brief This file contains all the function prototypes for
5 e h! \0 e6 g [ - * the usart.c file p" v6 R. U: k' w( j* v6 e
- ******************************************************************************: p6 }3 ?# A5 ]* p2 K% V; @
- * @attention! D/ L7 Q5 e$ W1 ~$ w" V
- *
! k8 r/ u9 ~# c4 p8 ^ - * Copyright (c) 2022 STMicroelectronics.
& q: ?% S8 D; r! S+ l& m' x- u - * All rights reserved.
: X& `+ x, `) N! z2 G& v - *
- a( L" I5 c( O - * This software is licensed under terms that can be found in the LICENSE file
8 Q! X- t, {& t3 C' i - * in the root directory of this software component.$ v( S+ T$ m4 n$ b3 f4 P
- * If no LICENSE file comes with this software, it is provided AS-IS.
" B5 q% N+ y7 H* Y _ - *. M4 Q: e7 K" p; K5 w
- ******************************************************************************
' n7 n# b! K8 F/ Y6 q% b3 ?) P$ g - */
0 [- U* L5 o# p - /* USER CODE END Header */# Z2 @ R' _! q [0 q- |
- /* Define to prevent recursive inclusion -------------------------------------*/
" l( [( G6 C, ^1 I7 N0 P0 ? - #ifndef __USART_H__% w$ q7 I6 w+ c. N
- #define __USART_H__4 ~) m, b7 N3 r7 S0 W/ S m0 \4 ?
-
! B7 a( O6 j: \* @: X' G - #ifdef __cplusplus
& \& w' R# [# J+ j - extern "C" {
' L& G. X. N; _4 V - #endif
- T5 k2 a. B4 }% G, `! v8 e0 b - 9 B$ P4 o5 a7 [
- /* Includes ------------------------------------------------------------------*/' `4 `- L8 q, a+ r/ g8 z$ |; w
- #include "main.h"* s$ I. v. j) p1 \* k
- 3 B1 V, d0 W7 F2 S: ~
- /* USER CODE BEGIN Includes */2 C- r; |7 x; [, C' w9 @; D
- #define USART_REC_LEN 200 //定义最大接收字节数 200+ x; n/ q9 ^+ ]( _5 v- }' [
- 0 X, ]/ ?* v" f8 q# M8 Z6 v- f
- extern uint8_t USART_RECEIVE_CHAR;
* Q# h. V1 {8 T - extern uint8_t USART_RECEIVECOMPLETED;
$ Z I8 ?" Q- _) [- b: ?1 U - extern uint8_t USART_COUNT;
! C7 `( t1 |- S4 o4 q, X5 q - extern uint8_t USART_RX_BUF[USART_REC_LEN];
! }7 d% m( o" |6 S$ S9 | - /* USER CODE END Includes */& I$ ^* @7 x2 w8 V# _( q
-
/ `& j0 j9 e/ W2 d+ a. D - extern UART_HandleTypeDef huart1;/ g: v; E9 N6 v
-
v( `, R9 ?. m& a - /* USER CODE BEGIN Private defines */' O3 J' e2 i, q1 u5 q
- 5 ]9 G6 p% [. c+ i
- /* USER CODE END Private defines */9 d" s7 z. M( C/ x7 M2 U- ~0 c
-
3 J' s l, ?& a9 B. S/ r A1 W - void MX_USART1_UART_Init(void);. _) q. e O) [; I! T
-
. e j. Y) \, ~! S$ A. C. n - /* USER CODE BEGIN Prototypes */. N/ O% U8 m% H1 H
- void ClearUSARTReceiveBuffer(void);* |! I, ], g: g v2 f% t
- /* USER CODE END Prototypes */
- E% X& U8 m: ~8 D0 u8 C -
/ V2 |7 T6 ]! G - #ifdef __cplusplus) h. F7 z0 P; Q8 l4 S V D
- }' o4 l% o6 E6 U/ q4 g
- #endif( q9 R( ^7 G+ |5 I. b
-
4 L/ J' o6 B- a' A3 o - #endif /* __USART_H__ */% m0 i9 f+ V7 f& ~" p. m+ k
-
复制代码
& Z7 y/ a* E6 C; Rusart.c6 _" N5 q) D% g: d# | \1 }; S
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- /* USER CODE BEGIN Header */1 l6 B6 s' u2 {9 h# E' {/ q
- /**5 u2 E7 X$ | V, J% c5 a( E$ L
- ******************************************************************************* t7 Y: p& m4 D+ g0 v+ B1 \
- * @file usart.c# h) i5 U4 E2 u) J+ w2 j2 P
- * @brief This file provides code for the configuration/ J' f* N e2 q, f
- * of the USART instances.
" S' \+ l# a% i* ~* y( w" ~& m - ******************************************************************************
8 {) I3 `! \. V1 g( O% b - * @attention3 ]0 o0 Y+ R( M" r
- *3 T8 C5 v0 w) z) l7 p
- * Copyright (c) 2022 STMicroelectronics.
J1 S/ d6 S/ p8 e3 r - * All rights reserved.
0 H- s2 j0 G X' `& k9 T - *6 S* y: s' N3 `$ b& b0 n
- * This software is licensed under terms that can be found in the LICENSE file' z- L. f3 |7 a3 ?& \1 ^
- * in the root directory of this software component.
% J7 u, b6 f% Y! {, V - * If no LICENSE file comes with this software, it is provided AS-IS.
1 [9 D, F6 w" @2 j0 [4 Y - *
' E* e$ I, { w% d. f4 y& m9 I, s, X - ******************************************************************************
6 `( D7 o7 {7 f8 e5 D5 W - */
1 l/ c, A( n) J. z7 I. h8 h9 ^. R - /* USER CODE END Header *// X4 e6 a/ X$ T o8 l9 c
- /* Includes ------------------------------------------------------------------*/
9 o/ @9 g; F; }( i9 L - #include "usart.h"+ m( f- j3 Q. J+ W! b
-
3 b( Q% o9 b U1 S7 ^, @( {9 C - /* USER CODE BEGIN 0 */: y" `4 n* S; W- [
- #include "stdio.h"8 w1 j) R" \' |) q! u
- #include <string.h>
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- uint8_t USART_RECEIVE_CHAR = 0;
7 x! E4 l6 _- G" ` V - uint8_t USART_RECEIVECOMPLETED = 0;// 1 Completed 0 Incompleted3 I- Y+ ?) @4 o" \8 z- N5 h6 U
- uint8_t USART_COUNT = 0; // 接收的字符数
9 j# F% a k+ j, A, j1 T3 S - uint8_t USART_RX_BUF[USART_REC_LEN] = {0};
+ ?5 Q" D9 _" H- L' K - /* USER CODE END 0 */9 N1 |* S2 D( h, H. Q N$ k
- ) N# @' ]$ f# Q B3 @4 t1 W; c/ E
- UART_HandleTypeDef huart1;0 |0 J }7 A2 T8 f, O8 @) h( N5 p
-
) g: l* `' D' a - /* USART1 init function */0 @% h& w$ @/ X$ f
-
% d8 S3 B" y z X2 l; d - void MX_USART1_UART_Init(void)/ y+ } _/ Y9 h, I* K
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- % E" K. O( |+ P2 X6 ]/ D n( n; V
- /* USER CODE BEGIN USART1_Init 0 */
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- /* USER CODE END USART1_Init 0 */( y* ~, I' U7 @5 T; {
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- /* USER CODE BEGIN USART1_Init 1 */
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- /* USER CODE END USART1_Init 1 */. S1 ^0 z' f0 ~; c& d% X
- huart1.Instance = USART1; v* D/ {. H; l: b4 f
- huart1.Init.BaudRate = 115200;
8 ~2 C! }( H5 G8 H2 r( P1 ? - huart1.Init.WordLength = UART_WORDLENGTH_8B;
) S" H* f$ Q4 Z& U& ? - huart1.Init.StopBits = UART_STOPBITS_1;( H8 `8 c! J9 A5 r1 ?7 o8 b3 n
- huart1.Init.Parity = UART_PARITY_NONE;
/ O. `! Z1 L/ C) i% K+ T5 O. a" H: ` - huart1.Init.Mode = UART_MODE_TX_RX;
7 y3 U* C+ s: f. ]8 `; n - huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
1 A. H7 s# y( f8 q - huart1.Init.OverSampling = UART_OVERSAMPLING_16;0 ~0 k5 |* f0 T
- huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;; T5 S' a7 {" J2 G# _: t4 z
- huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;% x+ {- |. v, q! D$ M. h
- if (HAL_UART_Init(&huart1) != HAL_OK)0 M8 m2 ~' A; P( S& e- q- w! [
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- Error_Handler();
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& B! ~! ~/ j; r% _/ T - /* USER CODE BEGIN USART1_Init 2 */* |: F/ H' c: I; s
-
7 u. J; q2 W! R- i+ b1 a- b - /* USER CODE END USART1_Init 2 */
: X8 Q6 i& S4 a6 N+ n0 \8 c -
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4 t! b1 _3 Y' i, I7 v -
3 L" v7 d: I L4 h - void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle)
% x; f- d* I: D2 d! h8 @ - {( U+ O# J- w+ f) Z* ~! }
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- GPIO_InitTypeDef GPIO_InitStruct = {0};
w: W1 v2 Q& K7 Q! o - RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};5 Y4 O6 \, a7 U% y7 O
- if(uartHandle->Instance==USART1)/ ^. h( o3 k; Y: v% p4 N; T
- {2 X: v6 i& v) A; m) B: F/ g+ x% _
- /* USER CODE BEGIN USART1_MspInit 0 */
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- /* USER CODE END USART1_MspInit 0 */
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- /** Initializes the peripherals clock5 v0 z& d0 p& J( |( p$ g: ^9 h
- */8 _" j1 N7 o. [6 ^6 U2 ?
- PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1;8 Y. L2 g* {* C, c9 y
- PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2;
! L+ T4 _1 X4 {: h - if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
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- Error_Handler();2 R, C/ ?/ o! T- t! h ?* F) a
- }
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- /* USART1 clock enable */7 \* a% Y/ b& {2 a0 V, G
- __HAL_RCC_USART1_CLK_ENABLE();
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, {+ W& t) l$ h - __HAL_RCC_GPIOA_CLK_ENABLE();- M; h3 r! e: S' Q X: }
- __HAL_RCC_GPIOB_CLK_ENABLE();
% |$ o. {. w4 X6 M& `( C - /**USART1 GPIO Configuration
7 ]6 I1 n8 D7 E+ @0 L+ f0 d - PA10 ------> USART1_RX
' ?$ ^: k4 h1 j; h7 b - PB6 ------> USART1_TX4 {$ E% A- j) o" p7 @8 e$ _
- */% x0 [) _5 G2 j! T: u: C- q
- GPIO_InitStruct.Pin = GPIO_PIN_10;8 ?% Z; a* R( o. e
- GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;2 U; F! |( P9 d; N6 Y
- GPIO_InitStruct.Pull = GPIO_NOPULL;
2 A7 w$ Y: K: ^ - GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
9 T& d) D) f3 m! }- z6 Z3 W - GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
5 P( L# C5 a; l - HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
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- GPIO_InitStruct.Pin = GPIO_PIN_6;: L5 e- u3 S2 I8 S7 ^0 J
- GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;2 S$ h r8 |% g& P7 [% R: Z6 P, Q
- GPIO_InitStruct.Pull = GPIO_NOPULL;
2 i o! G8 e1 L - GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;0 M, C" C: D* J# D
- GPIO_InitStruct.Alternate = GPIO_AF7_USART1;
1 ]; r& m' \0 r - HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);6 i! [3 e- v8 f" [& ] p
- R0 k' ]- x3 R' l* ^8 E0 f4 y; Z" b
- /* USART1 interrupt Init */- w" W+ ?3 B1 p2 v% L
- HAL_NVIC_SetPriority(USART1_IRQn, 0, 0);
6 d4 s: V3 \* R- q& R$ _* t8 A) A - HAL_NVIC_EnableIRQ(USART1_IRQn);
8 \' ?3 {& p6 Q' L; A% F% F: A - /* USER CODE BEGIN USART1_MspInit 1 */* ]0 n' k9 B" l
-
: e6 y _3 d6 H, _& S - /* USER CODE END USART1_MspInit 1 */
9 F4 |6 t# Z) O* e7 Q4 J- G - }
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-
) s, k' U& Y7 W9 J' Z - void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle)
4 Q8 i' ?: x7 X6 J; V) P - {
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- if(uartHandle->Instance==USART1)8 r2 `7 L7 O P0 c7 P8 e
- {
' w* J- x/ u6 \; f7 E6 r, ^: ^6 ^ - /* USER CODE BEGIN USART1_MspDeInit 0 */, y& a0 ?# h5 t0 T7 i% t' m
-
+ b# u# ^4 z2 l5 S/ K# ^7 g. O - /* USER CODE END USART1_MspDeInit 0 */! P% B8 M K- `. R
- /* Peripheral clock disable */
! |- a& c0 ^) c5 e' d: ]. U - __HAL_RCC_USART1_CLK_DISABLE();1 W# j4 h! q1 n8 G3 [9 w; n
-
2 k' R8 J1 W7 P5 I - /**USART1 GPIO Configuration/ V3 [1 }1 c+ H
- PA10 ------> USART1_RX
" Y$ n8 k0 h! f/ i: [5 _ - PB6 ------> USART1_TX
1 f2 u$ N/ r- U/ W0 x - */: U4 W) G2 ^4 j- ^3 e6 t% E, a
- HAL_GPIO_DeInit(GPIOA, GPIO_PIN_10);: x% D. r/ i3 k$ t) ~% E
-
; [( n2 `) z1 v* J: n5 C% ~) f6 n, \ - HAL_GPIO_DeInit(GPIOB, GPIO_PIN_6);2 R# Z' ?9 q+ o: w
-
3 o9 G, e7 L1 f5 S( E% [" R - /* USART1 interrupt Deinit */
3 I" c! a* S K F* a( h - HAL_NVIC_DisableIRQ(USART1_IRQn);
( Y! R) Z8 K% i7 S7 Z5 @/ U - /* USER CODE BEGIN USART1_MspDeInit 1 */
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- /* USER CODE END USART1_MspDeInit 1 */
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- " v) N. }! o0 `; G
- /* USER CODE BEGIN 1 */1 u+ m9 Q! S3 o* [+ @; N" J
- // 重定向函数15 F4 L R1 q$ Y
- 0 m0 P9 i- V% `5 y9 H% P
- // 注意这里重定向函数的写法
! \ X: x) r2 k8 m7 V, X6 a - int fputc(int ch,FILE *f)1 `5 K; A( s1 P: o& w& E
- {
; o* i ^; X- k' R) O% I1 H5 d9 @ - // 另一种重定向函数写法
# i3 B- Y; a6 E1 W5 A' J. ~: t - // uint8_t temp[1]={ch}; F' w2 B: e7 G1 T
- // HAL_UART_Transmit(&huart1,(uint8_t*)&ch,1,0xFFFF); //UartHandle是串口的句柄
' s0 }3 }1 q9 ]$ P% ?1 P - // return ch;
+ I4 E# e0 X* }) f6 ?: l9 t -
7 X7 U" N, g! H - // 可行的重定向函数写法3 H" [( ^0 N- G0 h
- while(!(USART1->ISR & (1<<7)));, F* t3 G9 \ l$ m* V
-
1 q& y8 ]) e9 t3 W4 G% f$ O - USART1->TDR = ch;+ V4 d7 c4 t9 y3 t- J- u
-
7 u# G0 h3 X. v4 e6 Y/ [ - return ch;
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- ' [% c, I E" e5 X) Q8 r
- // 重写串口中断服务函数
0 U5 Q0 O# ?- S4 c: M - void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart){
$ P$ s% e) r& N$ I8 L: T# p - // 每当串口接收一个字符就进入这个HAL_UART_RxCpltCallback函数
1 w! F# ~4 N5 j+ L - if(USART_COUNT >= 200){
7 C' F7 m( T- s - // 判断接收的字符串长度是否超过了最大缓冲区长度' l z8 u7 r% [ P
- printf("Overflow");// 若超出最大长度则输出Overflow
/ [3 U7 E' h: v2 h8 Q, T' Y - memset(USART_RX_BUF,'\0',sizeof(USART_RX_BUF));
. t* Q3 u0 n( Y) F0 C - USART_COUNT = 0;
: p& a% q9 `# n6 j* L - }else{
0 i" d d' R) r. Z# r l - USART_RX_BUF[USART_COUNT] = USART_RECEIVE_CHAR;// 将接收到的依次字符存放到USART_RX_BUF
" }" j4 x! f; t+ I; y/ P5 a - USART_COUNT++;// Buffer中的指针后移5 N |$ J1 c# X
- if((USART_RX_BUF[USART_COUNT-1]=='\n') && (USART_RX_BUF[USART_COUNT-2]=='\r')){// 判断是否读到了\r\n8 A9 b2 s1 u5 k$ I
- // 若已经读到了\r\n则Buffer中的数据即用户发送的数据且以\r\n结尾% L# L0 I$ E! ~: F+ G
- // printf("Received Completed");
l8 }+ O: i! C# s - USART_RECEIVECOMPLETED = 1;
; z/ {( i4 Z" c8 J2 F" u, b, z, J - // HAL_UART_Transmit(huart,USART_RX_BUF,sizeof(USART_RX_BUF),100); // 将Buffer中的内容传回给用户/ A% ^6 w% t0 Y
- // memset(USART_RX_BUF,'\0',sizeof(USART_RX_BUF)); // 清空Buffer用于存放下一个用户发送的字符串
! {4 W) X0 |9 R7 t2 t - // memset(USART_RX_BUF,'\0',sizeof(USART_RX_BUF));
$ t3 l9 |& p9 w - // USART_COUNT = 0;// Buffer中的指针复位1 [. i( `1 u0 c
- // USART_COUNT = 0;
|$ r. X. Q# ]) t# ? - }
3 i) t7 t* v) z) q, ]2 L! X - }+ v9 w" T( r! Z' }( i" O% s2 \
- HAL_UART_Receive_IT(&huart1,&USART_RECEIVE_CHAR,1);// 再次打开串口中断否则串口只能接收一个char字符
3 q4 k% \; I9 v - }% K7 s. T9 C1 |, I) S( k
-
$ l: {2 L% C% H$ @9 e/ c - void ClearUSARTReceiveBuffer(void){7 f7 m% S8 T; Y9 t
-
( \/ w( y o7 J* R+ W - USART_COUNT = 0;// Buffer中的指针复位; X' ]% G1 W' Q
- USART_RECEIVECOMPLETED = 0; // 清除接收完成标志' P. ^: d+ p' ~, H
- memset(USART_RX_BUF,'\0',sizeof(USART_RX_BUF)); // 清空Buffer用于存放下一个用户发送的字符串
3 A+ Z; @$ r0 {+ z* F" o+ A - }
4 R: X$ M7 A( s) M& Y - 2 z) o. R6 @6 Q6 d3 w/ i
- /* USER CODE END 1 */
复制代码
; X5 [/ y0 Q6 B9 lmain.c
}* O/ X$ P: u7 e) {- H& j7 a$ r0 r2 i, P. m6 I. u1 o) B
- /* USER CODE BEGIN Header */
2 c% M3 `" H3 H5 D% a - /**
7 ~9 n# @- Y! v4 k+ q, k& d0 u - ******************************************************************************) B0 S9 Y* N/ Z: B* I! }. Y
- * @file : main.c2 U+ D- b& F0 W2 R7 x0 W. @
- * @brief : Main program body8 J7 K% [6 |* Q% ^6 z
- * @author : Lihang Zhu
* i, g& N1 @: ]2 e& d - ******************************************************************************3 G3 A0 n! p- ~" O: F9 C
- * @attention: x5 x$ |5 w& o
- *: o& ]) G" T8 Z0 j5 q0 e
- * Copyright (c) 2022 STMicroelectronics.
$ O2 W9 A6 o7 u - * All rights reserved.
/ m7 R- H, z& i6 c - * y f) }2 Y$ i( {+ M. _
- * This software is licensed under terms that can be found in the LICENSE file( Q$ t& f3 c2 |. B2 G- t' O5 _
- * in the root directory of this software component.
. Y& o1 L/ V- I: Y. n! K - * If no LICENSE file comes with this software, it is provided AS-IS.
9 l- K5 y# {$ }2 ^+ ]* ^ Q - *0 |" Y, r% _' Y' K" w" p* l% s7 {% C
- ******************************************************************************
8 M7 l0 v5 \( V6 `5 f - */) R$ p8 v/ D4 W, m/ m
- /* USER CODE END Header */8 b% \0 w) F/ s. ^ ?5 D6 o
- /* Includes ------------------------------------------------------------------*/
+ g& \3 l) M" p - #include "main.h"
7 o& X# L0 c$ J; u - #include "adc.h"1 w- c" l# c% z# Q
- #include "dac.h") v% A; \ ?* J2 \4 x
- #include "dma.h"
8 Y, ]6 d2 z8 ?( D y' A: E0 p3 u - #include "tim.h"
( \1 q* r U- p3 ^ - #include "usart.h"
. x% j) P9 x& I; M - #include "gpio.h"
: I- f8 I- z' ]4 o& A/ l9 d - #include <stdio.h> D- x# n/ Y7 U7 I- x" p5 S
- #include "cv.h"
. t! D+ U/ F( X3 Y - /* Private includes ----------------------------------------------------------*/
5 f! \) m/ o& ]4 @( W- L - /* USER CODE BEGIN Includes */
4 s v/ k a. l! w! v - /*PB6---UART1_TX
3 Q- Z" p1 }# `7 p6 u* o - PA10---UART1_RX
8 m2 u1 L* A3 L3 `8 R( P, d* [ - ' s' K a8 Y9 |& L( b) O) {# a/ G' A
- PA0---ADC1_IN5; P9 `' ^9 }3 p* k% o
- PA1---ADC1_IN6
6 i+ m: ~- S1 O8 R* E3 y' W2 y - PA2---ADC1_IN71 ?- S, b8 y3 P( y. Z% {
- PA3---ADC1_IN8
, F) |/ u. Y6 ?& {4 S; @6 U1 x - PA6---ADC1_IN11$ O% H' X, _3 q. R
- PA7---ADC1_IN12
0 c1 ]5 a6 U3 P# h9 R$ I, A8 k" s. A - PB0---ADC1_IN15
1 o+ `+ b: z- ?. x5 X/ w - PB0---ADC1_IN16. a" g& v1 y3 b( l
- 1 ?( }4 k/ }, |1 @9 Q
- PA4---DAC1_OUT1 程序输出 2048/4096*3.3= 1.65- t3 L5 o0 h& l2 u$ Z/ X' a( c
- PA5---DAC1_OUT2* @* s1 a$ d: R6 `
- ! ?1 v1 b+ ^* d" Y' O
- PA15 LED灯进行翻转 亮灭
+ t& r' f' Q1 T6 ? - */+ f1 X Z6 r2 U# F% c# b, B* X
- /* USER CODE END Includes */2 H6 {7 ]; }) w3 i0 s( k
-
2 j5 Y4 O9 J+ }( G - /* Private typedef -----------------------------------------------------------*/
0 i8 { U$ _4 D, x& A - /* USER CODE BEGIN PTD */
" G% z2 a6 S2 u# M - $ r2 d+ y5 }6 W' z
- // ADC Buffer 16bit
5 B. k0 w9 w5 C - volatile uint16_t ADC_Value[8];//存储数组+ G/ |- ]3 y2 c+ w+ [6 J
- float ADC_RESULT = 0; " e( m7 ~5 ~1 q: ?; N, F: P
- // USART Related Content
3 D# {& }, b2 h) V: K8 L, r0 Z/ L3 ~ - // @author : Lihang Zhu
- L8 q$ _) V" W - extern uint8_t USART_RECEIVE_CHAR;! _, Y6 |9 K7 D% `
- extern uint8_t USART_RECEIVECOMPLETED;
" i0 h. I$ |4 s4 o4 u/ Y, M5 J - extern uint8_t USART_COUNT;! Q0 D' p( N0 m! `. }
- extern uint8_t USART_RX_BUF[USART_REC_LEN];
4 L3 b/ r$ Y6 w: r. \) l - /* USER CODE END PTD */
3 l$ O0 w9 C3 J' f4 K9 u - " q2 s' E; i1 V) ^# i {9 {+ K5 j
- /* Private define ------------------------------------------------------------*/& V& E) L E5 ?* Q8 D) {
- /* USER CODE BEGIN PD */
, w" ~6 W* X9 T4 \; A/ @ - /* USER CODE END PD */
, J8 U, n1 r7 a -
" @, k H; Y5 L$ F - /* Private macro -------------------------------------------------------------*/
' N! M8 N+ ?* A4 r! P - /* USER CODE BEGIN PM */
) o$ x" }' r8 j& f- S( B7 ?+ Z" H -
; L9 y5 G2 V: }5 f ]; y' p% c9 Z! F - /* USER CODE END PM *// n) U, u+ ?1 U
-
$ @$ m- Z" Z/ C; m' u" o8 ~ - /* Private variables ---------------------------------------------------------*/
1 t* m, C6 f2 {/ ~+ J& A l - 1 M5 N* r3 z4 f: ~% Y: K, w
- /* USER CODE BEGIN PV */
; f: ~; v: r; q- w5 X8 a -
& K! ` m: @5 ?# w" g - /* USER CODE END PV */1 z3 [8 {$ S3 `% ]
- & r1 V# d* k9 J* B) }0 c x
- /* Private function prototypes -----------------------------------------------*/
: g( \6 M a$ O8 C - void SystemClock_Config(void);0 v. l$ \6 z: t9 p2 o6 i
- /* USER CODE BEGIN PFP */! S$ o# X: M9 ]) @% ?% y# I0 K
- - D/ B5 G1 A/ }6 y" d: w& P
- /* USER CODE END PFP */2 n7 E- V& [: e! Z9 T% @
- . g( y! Y* U/ {) [
- /* Private user code ---------------------------------------------------------*/
! T! G7 {6 A( q5 U# {0 L+ I, V# B0 Q - /* USER CODE BEGIN 0 */
8 v0 B4 u: ^& j -
) k" ]! c) N) _, b- D. P& N3 N - /* USER CODE END 0 *// L* v! {# Q. b. A- {5 E
-
e+ Q6 Q; F9 G, c# j, s8 i - /**. d! k L/ N. M
- * @brief The application entry point.
& K- m) D& ]/ E% F - * @retval int
, I! r5 S& c k0 _+ s! G3 Q/ n - */
% n- X( h) L( o( T0 @% A0 [ - int main(void)
5 f( A4 ]1 d* p, D9 B, }& h. K - {2 w+ i1 T2 z$ i4 U4 _
- /* USER CODE BEGIN 1 */5 g; T; \/ u5 q& n7 M
-
, d9 S3 L; Z$ N - /* USER CODE END 1 */
0 |9 u4 e/ v5 G. l1 ]; Q, ]8 z -
/ O9 t8 L) A0 S - /* MCU Configuration--------------------------------------------------------*/
8 T* e3 l6 A; Z -
j0 _" U q% P+ q, D4 W. L2 k - /* Reset of all peripherals, Initializes the Flash interface and the Systick. */) Z' ?" W' d4 j
- HAL_Init();
+ o7 R8 E: R8 u' \0 _+ X - " w6 z/ c7 `- r. i, ?& ^+ c) Z
- /* USER CODE BEGIN Init */
6 ^) a) }9 |9 H1 P0 n- Q -
6 q& P0 G* P8 u+ q0 N& c7 f - /* USER CODE END Init */ f) @( I9 }, \0 M$ h( U
- 8 `* P' p* V8 ?8 D. F/ E
- /* Configure the system clock */, Y E! j3 q* c2 A7 u( X* I
- SystemClock_Config();
; H" ~* k7 d" p% F, X* L) T -
* v+ _! C* M0 E1 F. m - /* USER CODE BEGIN SysInit */' L. H& x- O3 z, O3 C: a# N
-
: A) B- O: a0 H: B/ x# M - /* USER CODE END SysInit */ Y* B- c! {. u C! _) V% P
-
/ o- ?7 f/ \9 \* m: b" _* }5 L8 ` - /* Initialize all configured peripherals */
) `" ^( F" l$ d _ - MX_GPIO_Init();
( [7 ^5 v7 v* j - MX_DMA_Init();* ^! T, D, W- D0 Z' l3 g9 x
- MX_ADC1_Init();; I2 ?5 L5 W, |6 `! t1 j
- MX_TIM6_Init();
+ T7 ]& s, a q C0 C/ x) ]- @% W4 [ - MX_USART1_UART_Init();
/ Z1 w) t- l( ~- g# m% X4 f2 ? - MX_DAC1_Init();
, g* i+ o0 E: o$ G: l4 ?- F - /* USER CODE BEGIN 2 */
0 t* Q/ }& {$ W% {6 } k( H - HAL_TIM_Base_Start_IT(&htim6);
1 O9 y1 |' v% }9 N M - ) w: c/ E: T n9 _+ U5 b$ x
- HAL_GPIO_WritePin(LED_Flsh_GPIO_Port, LED_Flsh_Pin, GPIO_PIN_RESET);% H7 C4 ]- d5 q+ \
- / [: _. r4 `8 h, k" K, q
- HAL_ADCEx_Calibration_Start(&hadc1,ADC_SINGLE_ENDED); //AD校准
& g/ S# [- F9 W; d6 ~$ ?/ a7 @ - HAL_ADC_Start_DMA(&hadc1,(uint32_t*)&ADC_Value,8);// 强制转换为uint32_t7 J# k/ W. S) t" d5 R5 C8 v
-
8 m/ R4 ?! e; J" S9 B8 Q. ]: p - / {, [9 N9 g2 C
- Dac1_Set_Vol(1200); // PA4* b! c; }+ j0 c% k5 `7 A4 x+ y7 I
-
) C) ~" g( L1 c% r" n# @: Z4 D7 x7 B - /* USER CODE END 2 */- l! z y3 }7 Q) P/ {) x7 F( X; H
- ( m- q0 U0 _1 |2 s: F" Z9 i
- /* Infinite loop */2 ^$ H& ~( L3 L0 L) d6 C
- /* USER CODE BEGIN WHILE */
" M3 y" ^" |( K" a' t, k0 q" y- l1 N& ` - HAL_UART_Receive_IT(&huart1,&USART_RECEIVE_CHAR,1); //开启第一次中断) V9 w5 N! f4 Q& i. s
-
8 r0 [7 i2 A. @' I0 i9 d - while (1)$ b2 Y M4 L7 K' I4 u/ K5 x
- {, }: p3 k% L# |( h
- /* USER CODE END WHILE */
9 W4 O8 J# k' t' B) Z Y - // ADC_RESULT = 3300000.0/4096.0*ADC_Value[0]/1000.0; printf("%f \r\n",ADC_RESULT);
$ k2 U/ E5 ~ R" l - // HAL_Delay(300);# M" e: a* O+ }/ _6 V" `
- /* USER CODE BEGIN 3 */- q* _% g( h" F' }* c* S' D$ V, k7 Z
- // printf("Hello");( Y8 j& C- U8 n4 q+ f7 x. z
- % b4 T- ~- G1 N
-
# W. a. E: O+ y - // int i = 200;! n% M. S2 x! S5 J# ]
- // if(i>=0){
4 a: O$ n& ^/ f! G - // CV_setting1();
3 W R2 i$ D2 c+ V- n9 D/ l1 O - // i--;
* N0 m2 q8 T: g1 @5 @) c: K! _ - // }$ `! g8 {7 H8 M0 ]2 Z5 R
-
5 w2 S x* o% O6 s - }4 l# I" h9 z' T. b0 _
- /* USER CODE END 3 */3 m- v# u0 p: X L
- }( h7 j: x" \* ]2 i; T9 Y1 g+ R7 g7 e' F; l
-
% j- F7 L) Q, V. e8 | - /**
5 T# ~: g+ r l - * @brief System Clock Configuration {- m+ A0 x6 G2 @
- * @retval None* i# H3 G% a) g# d" O
- */4 r& k/ d' v* L" M
- void SystemClock_Config(void)
4 G: K8 ~7 m! ^( g; h4 q$ f - {
: I7 o* }/ h# k" z3 M! q$ P - RCC_OscInitTypeDef RCC_OscInitStruct = {0};
; J5 S; m. Y- M: ?4 r# O - RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
j5 Y U3 V/ K) r -
! q+ F% L& [) p1 R4 w* | - /** Configure the main internal regulator output voltage S5 H- O3 g1 S
- */
8 e5 X- o3 s8 H5 ^" _5 n* c - if (HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1) != HAL_OK) ~/ Q" `) _& I- V7 y' q. D2 V
- {- b5 `5 E$ S6 f. o9 r
- Error_Handler();
5 ?$ I/ A% \" L3 Y; |. q/ Y) A - }
% C s; _( z" ? -
* o6 E( p: X* K - /** Initializes the RCC Oscillators according to the specified parameters1 ^* T) }) J( o8 ?' p: v
- * in the RCC_OscInitTypeDef structure.+ b1 F% v ?; v, H2 F _
- */8 j1 I* y7 _' @! o# u" `' b* f
- RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI;
! d+ G0 J) z1 p0 ]# }6 Z9 x: R - RCC_OscInitStruct.MSIState = RCC_MSI_ON;+ p5 T. ?- q# G' v [* P8 U
- RCC_OscInitStruct.MSICalibrationValue = 0;
& F$ X8 I0 f. |+ z - RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_6;6 f$ M# }! [6 I
- RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;" K5 i3 Z* j @( ~; Q
- RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI;: @4 ?8 O+ ?+ z- R) Y* C! C
- RCC_OscInitStruct.PLL.PLLM = 1;+ E3 V7 A; w2 x; m4 a
- RCC_OscInitStruct.PLL.PLLN = 40;
# }/ Q8 ~6 O+ S - RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV7;
3 c" J: q) N+ _* U8 R% k - RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
# O4 w; }% n; ^+ q! k - RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
8 [% u4 @6 C8 e7 R - if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)& T# U7 z% x) ?% ?! ]
- {/ e9 b# h: E. {
- Error_Handler();/ X2 G1 I: T' P, W: Z1 h- g
- }/ p+ s; Q3 {; R2 Q9 }' m
-
$ ~- [. k$ Z2 B9 A - /** Initializes the CPU, AHB and APB buses clocks) p; P* R! W c0 i+ z
- */5 w& w C7 j$ a8 K* k
- RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
$ U, Y1 a# N4 P: f4 U) B - |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
$ H/ F; c) }7 P0 J3 S: f) h - RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
$ w) H8 g0 L5 V$ q1 ~9 P& [7 T - RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
+ h9 h% W/ B% P, O' h |! n& i( d - RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;" Y% ]( q) a2 q- `) ~9 N
- RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;5 W( f, M4 m* X8 l
-
) Q" `" {2 F0 U$ v! M) S3 F1 { - if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)6 |& r8 L. D& a. o4 U8 R
- {6 G- q: R, {. P+ X! B
- Error_Handler();
% J- s+ ~! R" m# I: D - }! z9 g. S- y. t9 i$ ~
- }
+ F" B& x, G$ e$ _! | -
, D7 |& E' N1 | - /* USER CODE BEGIN 4 */4 e- z$ q2 r+ G' W9 |, a: p
- 4 u2 N, R8 M1 k, c$ J, T8 ^) I
- /* USER CODE END 4 */
1 r/ v9 L* h4 b* a. y5 w* l - / d+ O2 F; n! L {( S
- /**/ Q/ F) k0 d! N7 L0 f
- * @brief This function is executed in case of error occurrence.
, B6 K& u: k V# x7 M - * @retval None
9 B' m7 H: p& }9 E* T/ U8 F - */& q5 X9 o4 {2 h* c* Y
- void Error_Handler(void)
7 |3 S' m) F" x# d$ \ - {0 }# [) _( w! i' K+ q( ~. J
- /* USER CODE BEGIN Error_Handler_Debug */
: B$ ?5 D; Q" A6 i! ]7 m3 D( Q - /* User can add his own implementation to report the HAL error return state */4 ~6 b7 E: f6 f7 j, m$ Y, r; X
- __disable_irq();8 r& ?% r/ U8 \
- while (1)
4 n8 m% R* H" E9 B: `: c - {
6 F+ U* s# r5 A E ?% L- } - }8 f+ ~& ~6 N+ s0 y: W! @
- /* USER CODE END Error_Handler_Debug */6 [" S$ ? _0 a! C
- }! P' `4 @0 n9 a% a
-
% m: M; O& j& B5 z - #ifdef USE_FULL_ASSERT0 x7 V. t' O1 T) D2 ?! \; R. o$ a
- /**+ S4 x6 b2 B2 i# R4 l! e( \
- * @brief Reports the name of the source file and the source line number
7 C! P% y* }2 r& G- Y v - * where the assert_param error has occurred.
8 E4 L$ b/ S( S9 f# | - * @param file: pointer to the source file name
1 N1 j5 _5 a5 o; e7 t$ J) W - * @param line: assert_param error line source number: l# @3 U3 c' T7 a% W1 Q9 I
- * @retval None
9 x$ o3 U" W1 X% X! B - */0 W% n* K H' W9 v6 ^8 _
- void assert_failed(uint8_t *file, uint32_t line)( o! f c. e7 p, h
- {1 c. y) ^% k+ u& @
- /* USER CODE BEGIN 6 *// `4 ^; d4 U7 j7 f
- /* User can add his own implementation to report the file name and line number,- o8 J( a* t# s4 }& C1 z% ]
- ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
4 d! v7 b, J+ |* _- c8 m - /* USER CODE END 6 */' _. w1 t, d0 o3 d# r
- }. z* F' s* q7 K. H$ a5 l
- #endif /* USE_FULL_ASSERT */
复制代码
% A8 W5 _& { Z8 _使用USART中断接收数据,记得要在while前开启USART中断 ^* U+ n, i) j6 y( y) o1 `' H; {5 x
2 p$ f% C$ ?8 A
3 U- W; ~% X. q3 o' m6 \( P3 Y4 X& m0 r& w9 C+ |
! j- {; F p3 u此外,这里也要再次开启中断# y# B. a4 W2 P3 ~+ ~. O9 i" Z
2 l! l( R7 w$ W/ k+ ~3 x! l
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% [4 M( b2 q, _2 j- `
7 |1 p# R. K R0 W3 S' U; ]1 L
注意:每当串口接收一个字符就进入这个HAL_UART_RxCpltCallback函数,我们将将接收到的依次字符按照收到的顺序从低到高存放到USART_RX_BUF中+ r" u- W' `0 a' K
( U( A1 \( e3 C8 J, s4 H' y
我们可以通过USART_RECEIVECOMPLETED判断USART1是否读取到了完整的数据
: p; \0 j5 o0 D, N2 U0 K" x. Z6 n7 t/ k# V8 Y5 I, P# \$ @
读取到的数据存放在USART_RX_BUF中6 N5 C+ f9 |. d: p* `
: M4 h9 e8 z) Z) E/ k- A. j
( O3 V6 m$ V+ K, j1 ?STM32Cube的时钟配置: k8 R/ c! b. ]! K
配置时钟信号为80 MHz' [4 f0 I) t, G/ ]" h$ O R/ N
# P; \( D- [- n, A% j+ b+ m! z% Z
注意:时钟频率过低会影响printf等函数的功能
9 H% k# s: a8 k$ n( Q" F( f, G
" R7 e0 ` a/ T' @. {
3 t5 e; u E" Y q; q" A5 E, v' l. j) g/ ?- ~
6 b1 o8 n' j0 p4 a
STM32的8通道ADC配置& k: V( L: K8 d5 F* E. ?
STM32Cube的ADC配置, E+ ?9 `# M9 o& l. F/ w2 _
& o& I. [' y& k+ n/ y7 R
5 g/ i- f) E: @
$ N0 b6 L( i" {+ y# JSTM32Cube的DMA配置
2 B$ \# ^- v1 `8 k. H配置为DMA通道1: F* }! t6 x2 i
q3 B/ T# I0 ^* z. O- H& j
3 ]' Z9 ^4 ~' W% s6 M+ O( t
! J9 J9 G/ n1 ^) ^/ T6 i设置DMA的循环搬运
+ g5 u7 k+ R# [. z9 g& X. G! [7 N4 r
6 V& v. G9 \% x( |+ ]- ?
" m/ z* i7 y4 z* p/ O; K# L 开启DMA中断
1 W& W% k: y6 K% w% @. j7 O2 o" K4 I0 g' G' T! s
" i" ?0 T6 x: G4 F
; r- G! r" A0 U9 `! Y7 i8 Z; D$ Z/ ?) Q! U: V: v3 H- m% [ V6 O
ADC的DMA中断2 }( h: Q$ u/ C& N
DMA的中断服务函数可以通过以下方式寻找
( S! U3 u) Y* c
& \1 I i6 s( B" h/ D8 R5 ]- O3 B首先在.s启动文件中找到对应的中断服务函数$ `8 Z+ z0 x, V8 @. j0 b
4 ~9 b; p4 |( x: y+ T# C2 P3 d
( H, k" ^ f6 v+ E$ _; E
+ G% m( n/ g' e, |3 S! M可以看到,其调用了HAL_DMA_IRQHandler函数! P$ S S' s/ L+ ~: [% d
) H; H# J/ N. \1 k1 a9 e
6 m! M% M6 }6 B
+ B ]; F! S+ }2 C9 Z继续跳进去5 i/ F7 Q& m! \2 `
* U% |8 b7 o+ y! q
3 ?. t- ?# j7 Z9 n- p0 V4 D
: F2 m. `$ v* k$ _. J' j
' k9 p0 C& M. L2 _* R$ I. J/ B, r
这里的XferCpltCallback是一个函数指针,我们看一下他的定义4 ]1 }+ s) D: Q+ p! c. [- D
" k1 U8 x3 l1 t$ h7 ?+ J3 u% P6 M
d2 C7 P# _% q4 [: U
% D! ^+ K/ K8 c: N这个函数指针成员到底指向了什么,你直接去追是追不到的,实际上在DMA启动之后会为这个成员赋值。1 T0 x! U( ]# w: P; A& ?2 N/ q
2 z. ~# s( x! g }( G这个赋值的操作是在HAL_ADC_Start_DMA函数中完成的
4 |) n% o- E9 M m% t B" d- i
+ y, w1 G9 K6 E2 N2 C% Z$ [8 U
. E/ j0 N1 F- Q) f- z4 S1 B; h5 s- n- W6 m
这个ADC_DMAConvCplt就是ADC DMA的回调函数
8 Q2 F1 L5 z% ?' W0 E; n- |5 n+ g) q4 x Q; q
0 e& D3 `3 Q% j2 P% ]& {8 j' m0 [1 F [
5 c0 y! X( g# _& O: w- p8 f
3 l# d' I2 Z+ r! i$ G1 v+ `
这个ADC_DMAConvCplt回调函数最终是调用这个" `4 r# Z* i j; p- S2 p
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也就是这个HAL_ADC_ConvCpltCallback函数,这个中断处理函数是weak的,因此我们可以进行重写
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我们把这个函数在adc.c文件中重写一下
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可以在里面关闭DMA,这样一次ADC转换DAM存放完成后就结束了2 S' U& n" F: F+ F y$ Q
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如果需要开始下一次,直接调用HAL_ADC_START9 T( L0 A0 H7 t) s: H2 I
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